Title page for ETD etd-102199-101855

Type of Document Dissertation
Author Mann, James Gainey
Author's Email Address jmann@vt.edu
URN etd-102199-101855
Title Process Integration: Unifying Concepts, Industrial Applications and Software Implementation
Degree PhD
Department Chemical Engineering
Advisory Committee
Advisor Name Title
Liu, Y. A. Committee Chair
Conger, William L. Committee Member
Davis, Richey M. Committee Member
Love, Nancy G. Committee Member
Sherali, Hanif D. Committee Member
  • Wastewater Minimization
  • Energy Conservation
  • Water-Pinch Technology
  • Heat Integration
  • Mass Integration
  • Mathematical Optimization
  • Thermal-Pinch Technology
  • Process Integration
  • Water Reuse
Date of Defense 1999-10-15
Availability unrestricted
This dissertation is a complete unifying approach to the fundamentals, industrial applications and software implementation of an important branch of process-engineering principles and practice, called process integration. The latter refers to the system-oriented, thermodynamically-based and integrated approaches to the analysis, synthesis and retrofit of process plants, focusing on integrating the use of materials and energy, and minimizing the generation of emissions and wastes. This work extends process integration to include applications for industrial water reuse and wastewater minimization and presents previous developments in a unified manner.

The basic ideas of process integration are: (1) to consider first the big picture by looking at the entire manufacturing process as an integrated system; (2) to apply process-engineering principles to key process steps to establish a priori targets for the use of materials and energy, and for the generation of emissions and wastes; and (3) to finalize the details of the process design and retrofit later to support the integrated view, particularly in meeting the established targets.

Pinch technology is a set of primarily graphical tools for analyzing a process plant's potential for energy conservation, emission reduction and waste minimization. Here, we identify targets for the minimum consumption of heating and cooling utilities, mass-separating agents, freshwater consumption, wastewater generation and effluent treatment and propose economical grassroots designs and retrofit projects to meet these goals.

An emerging alternative approach to pinch technology, especially when analyzing complex water-using operations and effluent-treatment systems, is mathematical optimization. We solve nonlinear programming problems for simple water-using operations through readily available commercial software. However, more complex, nonconvex problems require sophisticated reformulation techniques to guarantee optimality and are the subject of continuing academic and commercial development.

This work develops the principles and practice of an environmentally significant breakthrough of process integration, called water-pinch technology. The new technology enables the practicing engineers to maximize water reuse, reduce wastewater generation, and minimize effluent treatment through pinch technology and mathematical optimization. It applies the technology in an industrial water-reuse demonstration project in a petrochemical complex in Taiwan, increasing the average water reuse (and thus reducing the wastewater treatment) in the five manufacturing facilities from 18.6% to 37%.

This dissertation presents complete conceptual and software developments to unify the known branches of process integration, such as heat and mass integration, and wastewater minimization, and explores new frontiers of applications to greatly simplify the tools of process integration for practicing engineers.

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  Appendix_A.PDF 5.68 Kb 00:00:01 < 00:00:01 < 00:00:01 < 00:00:01 < 00:00:01
  Chapter_1.PDF 105.60 Kb 00:00:29 00:00:15 00:00:13 00:00:06 < 00:00:01
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  Chapter_6.PDF 210.39 Kb 00:00:58 00:00:30 00:00:26 00:00:13 00:00:01
  Chapter_7.PDF 141.14 Kb 00:00:39 00:00:20 00:00:17 00:00:08 < 00:00:01
  Chapter_8.PDF 241.42 Kb 00:01:07 00:00:34 00:00:30 00:00:15 00:00:01
  Chapter_9.PDF 7.68 Kb 00:00:02 00:00:01 < 00:00:01 < 00:00:01 < 00:00:01
  First_Pages.PDF 56.57 Kb 00:00:15 00:00:08 00:00:07 00:00:03 < 00:00:01
  Vita.PDF 11.23 Kb 00:00:03 00:00:01 00:00:01 < 00:00:01 < 00:00:01

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